symon22
15-05-2008, 10:03 PM
first of all good evening,
i have been asked today to have a look at a daikin cassette in a pub that has a fault.
i have'nt had much to do with these units so please bear with me.
first fault is communication code u4 from what i can read into the wiring diagram i think this would be wire 3 to the outdoor unit.
the internal p/c board had a burn mark on one of the tracks and no flashing led. the board was replaced and now blinks green as it should do as i read it.
the evap fan did not operate so i checked the feed through the fan capacitor and it had power through it no probs.
so i removed the motor and tried it on the other parrallel evap ,it worked fine.
so the questions are,if you could be so kind, are
any further ideas on the u4 code and what button sequence do you use to clear/reset the daikin hard wired controller
and would any of you guys have any further ideas as to what might be preventing the fan motor operation.
not being to familiar with daikin product, i've probably shot straight in deep and gone straight past the obvious answer.
thanks guys.
i have been asked today to have a look at a daikin cassette in a pub that has a fault.
i have'nt had much to do with these units so please bear with me.
first fault is communication code u4 from what i can read into the wiring diagram i think this would be wire 3 to the outdoor unit.
the internal p/c board had a burn mark on one of the tracks and no flashing led. the board was replaced and now blinks green as it should do as i read it.
the evap fan did not operate so i checked the feed through the fan capacitor and it had power through it no probs.
so i removed the motor and tried it on the other parrallel evap ,it worked fine.
so the questions are,if you could be so kind, are
any further ideas on the u4 code and what button sequence do you use to clear/reset the daikin hard wired controller
and would any of you guys have any further ideas as to what might be preventing the fan motor operation.
not being to familiar with daikin product, i've probably shot straight in deep and gone straight past the obvious answer.
thanks guys.